Sliding door lock mechanism



Feb. 1954 A. R. ADAMS ET AL V 5 SLIDING DOOR LOCK MECHANISM Filed April 27. 1948 2 Sheets-Sheet 1 INVENTORS ARTHUR R. ADAMS EARLE DONNELL GRIZZARD PAUL c. CADY ATTORNEY Feb. 2, 1954 A. R. ADAMS Erm.

sums DOOR LOCK MECHANISM 2 Sheets-Sheet 2 Filed April 27, 1948 INVENTORS' ARTHUR R. ADAMS EARLE DONNELL GRIZZARD PAUL C. CADY ATTOR N EY Patented Feb. 2, 1954 SLIDING noon Loon MECHANISM Arthur R. Adams, Glendale, and Earle Donnell Griz'zard and Paul C. Cady, Los Angeles, Calif., assignors to Adams Rite Manufacturing Company, Glendale, Calif. a corporation of California Application April 27, 1948, Serial No. 23,426

The present invention relates generally to locks for closures; and is more particularly concerned with locks for sliding doors, wherein a lock member will be actuated to locking position by a keeper, when the door is moved to closed position.

It is one object of the presentinvention to provide an improved lock, which is particularly adaptable for sliding closures, wherein a'lock member is so constructed that it will automatically be actuated to locking position by engagement with a keeper on an associateddoor jamb. To this end, the lock member is provided with an open ended slot so disposed that a hook portion is formed on the lock member. The lock member is so pivoted that it may swing so as to dispose the hook opening in a keeper receiving position, and engagement of the keeper against a wall of the slot will be effective to pivot the lock member to a position, wherein the hook retains the keeper against removal from the slot.

As an additional feature, ,the lock member is associated with a latch and a locking bar by means of which the latch may be locked in latching position with respect to the lock member. The lock bar and latch are arranged for actuation from opposite sides of the sliding door panel.

' A further object is to provide in a lock structure of the character described herein a casing having side plates so arranged that they may be mounted on opposite sides of the door panel to conceal the lock mechanism, these plates being adjustable for mounting upon door panels of varied thickness.

Another object is to provide casing flush plates for sliding door locks, which are provided with a flush actuator which is permanently assembled as a part of the flush plate assembly, and so arranged that it will make a slip connection with a part of the lock actuating mechanism, so that no tools, screws, or additional parts are necessary for interconnecting the actuator'with the lock mechanism. Moreover, the actuator is so arranged that pressure thereon in a direction to open the door will act to release the lock member with respect to a keeper.

A still further object is to provide an improved casing flush plate which is readily adapted for the mounting of different types of lockbar actuators in flush position. That is, a recess is provided in the flush plate in which there may be mounted a finger engageable button by which the lock bar may be shifted to locked and unlocked positions with respect to-the latch mem-- 8 Claims. (01. 292-429) her, or a key controlled lock actuating mechanism may be mounted in this recess, this mecha'-' .jamb I2.

nism including a cam or arm for throwing the lock bar to locked and unlocked positions.

Thus, a flexibility of mounting is obtained without the. necessity of providing diiferent flush plates.

Further objects of the invention will be brought out in the following part of the specification, wherein detailed description is for the purpose of fully disclosing preferred embodi ments of the invention without placing limita tions on the scope of the invention defined in the appended claims.

Referring to the drawings, which are for illustrative purposes only:

Fig. 1 is a fragmentary view of a sliding door and associated door jamb upon which there is mounted, as shown in elevation, a lock mechanism embodying the features of the present invention;

Fig. 2 is a vertical sectional View through the lock mechanism, taken substantially on line 2-2 of Fig. 4;

Fig; 3 is an end view of the lock casing as viewed looking toward the jamb engaging edge of the door, as it appears when viewed substantially along the line 3-3 of Fig. 1;

Fig. '4 is a transverse section taken through the lock casing, taken substantially on line 4-4 of Fig. 1;

. Fig. 5 is a fragmentary sectional view showing details of supporting the lock mechanism from the lock casing structure, taken substan tially on line 55 of Fig. 3;

s Fig. 6 is a fragmentary sectional view through a casing flush plate and actuator, showing the manner in which the lock mechanism is connected to the actuator, taken-substantially on line 5-6 of Fig. 1; and v Fig. 7 is a fragmentary sectional view through a casing flush plate and adjacent lock mechanism, showing an alternative arrangement, in which the key controlled device is mounted for actuating the lock bar.

Referring more specifically to Figs. 1 and 2 of the drawings, a lock enclosing casing as generally indicated at A is mounted upon a sliding door panel 10, this casing containing a lock mechanism as generally indicated at B in Fig. 2. The casing and associated lock is so mounted on the edge margin of the door panel as to be moved into operative position with a keeper I I mounted in a projecting position on an associated door The lock mechanism B will first be described.

The parts of this mechanism are mounted and supported in cooperative relationship between a pair of spaced frame plate members 13 and 13'.

More specifically, the lock mechanism comprises a lock member l4 which is pivotally mounted for rotational movement on a pivot member l5, this member being positioned between the ends of the lock member and having its ends supported in the frame plate members I3-l3'.

One end of the lock member is provided with an open ended slot 16 which results in the formation of a hook shaped end i! at this end of the lock member.

The opposite end of the lo'c'k member is en gaged by one end of a leaf spring I8, which is anchored at its other end by flexing over integrally formed projection lugs l9 and 28 carried by the frame plate member 13. This spring, as viewed in Fig. 2, acts to bias the lock member [4 for rotational movement in a clockwise direction about its pivot I5. I

The spring engaged end of the lock member is operatively associated with a latch member 2| which is pivotally supported at one end for rotational movement about a pivot22 having its ends supported in the frame plate members Iii-l3. The free end of the latch member is formedwith an angularly deflected end portion 23 whieh at its outer end is formed with an abutment shoulder 24 and at its inner end carries a transversely extending actuating bar 25.

The actuating bar 25 projects on both sides of the latch member 2| and has its ends extended through notched openings 26 and 26' in the frame plate members 13 and i3, respectively. The actuating bar also forms an abutment shoulder which, together with abutment shoulder 24, is movable into the path of movement of the adjacent end of thelock member M for limiting rotational movement of the lock member at two positions, namely, a full line position, as shown in Fig. 2, and the dotted line position as shown therein. It will be observed that in the dotted line position of the lock member H, the entrance opening of the slot i is positioned in a keeper receiving position in which a U-shaped portion 21 thereof may enter the slot and engage aganst a wall 28 thereof. This wall 28 is initially inclined and when engaged by the keeper portion 21, results in rotative movement of the lock member to full line position wherein the hook 17 looks the keeper against removal from the slot 19, and the other end of the lock member will be latched by engagement with the abutment shoulder formed by the actuating bar 25. It will be noted that the frame plate members l3 and [3 are provided with edge'notches 29 respectively to receive the keeper portion 21.

The latch member is normally biased toward latching position by a leaf spring 30 having a free end bearing against the latch. member. This spring is anchored byilexing the other end portion around a spacer}! between the frame plate members |3-l3 and engaging the end portion 32 back of aplate lug 33.

as viewed in Fig. 2, it will be observed that with the latch member in the mu line position as shown, the lock member 14 will be locked so as to prevent disengagement of the keeper H, but that by moving the latch member to the dotted line position, the lock member is free to move under the action of spring I8 to its dotted line position in which the keeper may be withdrawn or the sliding door panel moved to open position.

As an additional feature, the lock mechanism further includes a locking bar 34 which is pivoted intermediate its ends on a pivot 35 for swinging movement. This locking bar has one end deformed to present a right angled shoulder 36 which in the full line position of the locking bar coacts with a projecting arm 37 to lock the latch member 2! against movement to its unlatched position. However, it will be evident that if the locking bar 34 is moved to its dotted line position by applying pressure to its end 38 in a clockwise direction, as shown in Fig. 2, the shoulder 38 will be removed from restraining position with respect to the arm 37 so as to then permit manual movement of the latch member to released position with respect to the lock member I 4.

The enclosing casing A will now be described. This casing includes a pair of side flush plates 39 and 39" adapted to respectively overlap the marginal surface portions of a cut-out 40 in the jamb engaging edge portion of a sliding door panel Iii, as shown in Fig. 4.

One feature of the casing described herein resides in its being adjustable for variable thicknesses of panel closures, so that the same flush plate may be utilized for door panels of different thicknesses, without the necessity of providing a plurality of interconnected flush plates for accommodating various thicknesses of closure panels. This adjustability is accomplished by providing along the inner end marginal portions of the flush plate, a rolled or turned over edge 41 in each case which terminates in an edge sauce 42. These edge flanges are respectively provided with projecting wings 43-43 containing slotted openings 44. By disposing the wings 43-43 of the plate 39 and plate 39 respectively in overlapped position with the slotted openings in registration, movements of adjustment of the flush plates toward and away from each other may be obtained.

The flush plates are held in adjusted position by screws 44 which extend through an end flush plate 45 having its lateral margin seated on the flanges 4242 of the plates. These screws are threaded intooverlapping lugs 4646, carried by the frame plate members 53-43, so that by this arrangement, the lock mechanism is supported between the flush plates from the end flush plate 45. The ends of the plate 45 contain apertures 41 for receiving securing screws for holding the end flush plate, these screws being indicated by the numeral 48 in Fig. l.

The end flush plate 45 is provided with an opening 49 for receiving the keeper therethrough, when the door is in closed position, and an opening 56 in which a finger may be inserted for pulling the door toward closed position. In order to limit the amount of insertion of a finger into the opening 50, and in order to protect it from contact with other .portions of the lockmechanism, there is provided a cup-shaped shielding member 51 having upper and lower projecting wing portions 525'2, each of which contains an.

open-ended slot 53 for receiving a mounting screw. In the present instance, the cup-shaped member 5| is mounted by inserting the lower-- plate is substantially of rectangular shape and. contains in this instance a rectangular recessed.

portion 54 and a substantially circular recessed portion 55. On opposite sides of the recessed,

portion 54 the material is formed to provide parallel grooves or ledges 5656 having in each .case an elongate slot 51 formed therein.

An actuator 58 is slidably mounted for lateral movements within the recess 54, this actuator having end margins extending over the ledges 56, and right angled side margins 59 extending into the recess '54. This actuator is secured to a carriage member 69 of substantially I-shape with its intermediate portion of channel shape as shown by the numeral 6| in Fig. 6, this por-- tion being secured as by soldering or brazing 52 to the'bottom surface of the actuatorifl. The

end portions 63 are flat and are deflected at their end margins to form a right angled flange 64,

which extends through a slot 51 and has outwardly turned ends 65, by means of which it is held against removal from the slot, as shown in Figs. 1 and 7. lateral movement of the actuator, and the channel portion 8! forms a slip joint connection for receiving an end of the actuating bar 25 therein, the bottom of the recessed portion 54 being provided with an aperture 66 through which the end of the actuator bar projects. A spacer 6?, as shown in Fig. 6, interconnects the recessed portion 54 of the plates 39 and as, this spacer being connected at its ends by a screw 68 in each case to the bottom of the adjacent recessed portion. The foregoing provides a unique method of connecting the actuator as a permanent part of the flush plate assembly and utilizes a slip connection with a portion of the locking mechanism, of such nature that no tools are required to make the connection.

Various arrangements are possiblefor accomplishing actuation of the locking bar 34 manually from one or both sides of the door, or through the agency of a key controlled means. As shown in Figs. 1, 2, and 4, a pin 69 is mounted in the end 38 of the locking bar, this pin extending transversely of the bar and having its ends extending through an arcuate slot Ill in each case into the recessed portion 55 of the flush plates. The ends of the pin are provided with finger engageable buttons II which are substantially flush with the main surface of the flush plates. The pin 69 is retained against shifting movement by a screw 12. With this arrangement, the locking bar may be actuated to locked and unlocked positions from either side of the door panel merely by manually shifting the buttons H.

If desired, arrangement may be made to actuate the locking bar from only one side of the door, simply by not projecting the pin 69 through the slot on that side from which it is desired not to operate the locking bar. However, for emergency operation from this side, it is the usual practice to indent the end of the pin 69 on this side, so that it may be shifted by the insertion of a pointed instrument through the associated slot Hi into the indented end of the pin, and thus in emergency shift the locking bar.

Moreover, the unique construction of the flush plates with the circular recessed portion 55 as illustrated permits use of a key cylinder controlled actuating means, as generally indicated by the numeral 13 in Fig. '7. Such means is of conventional construction containing a cylinder actuatable by a key M, the key means including a threaded outer sleeve with which a mounting nut 15 is operatively associated to mount and secure the key means with its key end mounted in the recessed portion 55 so as not to The slot 51 thus limits the r project beyond the surface of'th'e associated flush. plate. The key means contains a cam arm 11'- for engaging the pin 69 and thus shift the locking bar to locked and unlocked posiiton, as desired.

From the foregoing description, it will be ap-' parent that the present invention provides a,

unique and improved lock and casingassembly l. A door lock mechanism comprising: a casin ;v a lock member, pivoted in said casing for swinging movements in opposite directions,- said. lock member containing an open ended slot;;

means for urgingthe lock member in one direction of its movement; a pivoted latch member in said casing having spaced abutment shoulders operatively associated with said lockmember for limiting pivotal movement of the lock member in said one direction at two positions, the open ended slot in one of said positions being adapted to receive a keeper therein, and in the other position lock the keeper against removal from the slot; and manually operable means connected with the latch member for moving it in a direc tion to release one of said abutment shoulders with respect to the associated lock member.

2. In a sliding door lock, a casing including a surface mounted plate having a recessed portion;

a lock mechanism operatively supported within said casing; means in the casing for releasably latching said mechanism in latched conditon, said means including an actuator member mounted in said plate for movement below its outer surface; and a locking bar supported for movement to locked and unlocked relation with respect to said member, said recessed'portion being adapted for vthe selective mounting therein of key controlled a casing; a lock member pivoted in said casing for swinging movements in opposite directions in a plane parallel to a face of the door, said lock member containing an open ended slot; a, spring for urging the lock member in one direction of its movement; apivoted latch member in said casing having spaced abutment shoulders operatively associated with said lock member for limiting pivotal movement of the lock member in said one direction at two positions, the open ended slot in one of said positions being adapted to receive a keeper therein, and in the other position lock the keeper against removal from the slot; and manually operable means connected with the latch member for moving it in a direction to release one of said abutment shoulders with respect to the associated lock member.

4. A door lock mechanism comprising: casing; a lock member pivoted in said casing for swinging movements in opposite directions, said lock member containing an open ended slot; means for urging the lock member in one direction of its movement; a pivoted latch member in said casing having spaced abutment shoulders operatively associated with said lock member for limiting pivotal movement of the lock member in said one direction of two positions, the open ended slot in one of said positions being adapted to receive a keeper therein, and in the other position lock the keeper against removal from the slot; manually operable means connected with the latch member for moving it in a direction to reaeeao'n leaseone of said abutment shoulders with respect to the associated lock member; and a manually actuatable lock bar associated with said latch member and supported for movement into and out of a position for opposing movement of the latch member in said direction to release said one of the abutment shoulders.

5. A door lock mechanism comprising: a casing; a lock member pivoted in said casing for swinging movements in opposite directions, said lock member containing an open ended slot; means for urging the lock member in one direction of its movement; a pivoted latch member in said casing having spaced abutment shoulders operatively associated with said lock member for limiting pivotal movement of the lock member in said one direction of two positions, the open ended slot in one of said positions being adapted to receive a keeper therein, and in the other position lock the keeper against removal from the slot; and a manually movable actuating member operatively connected with said latch member, said actuating member being so supported and arranged that movement in a door opening direction will actuate the latch member in a direction to release one of said abutment shoulders with respect to the associated lock member, whereby the lock member will be moved by said urging means to the other of said abutment shoulders.

6. In a sliding door lock, a casing including a mounting plate having adjacently disposed recessed surface portions; a lock mechanism operatively supported within said casing; means in the casing for 'releasably latchingsaid mechanism in locked position, said means including an actuator member mounted in one of said recessed portions for movement in a direction to release said latching means; and means within said casing including a locking bar supported for movement to lockedandunlocked relation with respect to said latching means, said other recessed portion being adapted for the selective mounting therein of key controlled means or digitally engageable means for moving the locking bar.

7. In a sliding door lock: a casing including front and back plates respectively mountable on opposite sides of the door, each of said plates having a recessed outer surface portion; a lock mechanism supported between said plates including a pivotally swingable lock member adapted to operatively engage a keeper on an associated door jamb; and means, including means between said plates spring biased to a position releasably latching said lock member in keeper engaging position, and a door opening actuator slidably mounted in the recessed portion of each plate for movement in a door opening direction to release said latching means and open said door.

8. A lock mechanism for a door mounted for edgewise sliding movement toward and away'from a door jamb, said mechanism comprising: a casing adapted to be secured to the jamb engaging edge of the door, said casing having an opening for receiving a keeper endwise therein; a pivoted lock member in said casing having a hook portion, said lock member being movable in one direction to a position in which the open side of the hook portion faces said opening so as to receive the keeper therein, when the door is closed; means for urging the lock member in said one direction; an abutment on the lock member engageable with and actuatable by the received keeper to move the lock member in an opposite direction to a position in which the hook member opposes removal of the keeper; and latching means having spaced. abutments which, respectively, are adapted to releasably retain the lock member in said latter position and arrest its movement in said one direction at said keeper receiving position.

ARTHUR R. ADAMS.

EARLE DONNELL GRIZZARD.

PAUL C. CADY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 810,927 Emmert Jan. 30, 1906 1,379,839 Skora May 31, 1921 1,544,960 Watts July 7, 1925 1,814,938 Lindquist et a1. July 14, 1931 2,246,787 Dall June 24, 1941 2,278,534 Dickason Apr. '7, 1942 2,304,612 Voight Dec. 8, 1942 2,387,187 Smith Oct. 16, 1945 2,404,845 Joachim July 30, 1946 2,508,090 Beems et al May 16, 1950 

